SF Features#121: Support reading alternative forms of tile image names.

[andy/viking.git] / src / vikmapsource.c

diff --git a/src/vikmapsource.c b/src/vikmapsource.c
index 0b2cad22eea94f9f929fcffb1018a730771374cd..ef7d9f7be7fbfa8d296754ec7dbf069a771f2199 100644 (file)
--- a/src/vikmapsource.c
+++ b/src/vikmapsource.c
@@ -314,6 +314,28 @@ vik_map_source_get_zoom_max (VikMapSource * self)
        return (*klass->get_zoom_max)(self);
 }
 
+
+/**
+ * vik_map_source_get_file_extension:
+ * @self: the VikMapSource of interest.
+ *
+ * Returns the file extension of files held on disk.
+ *  Typically .png but may be .jpg or whatever the user defines
+ *
+ */
+const gchar *
+vik_map_source_get_file_extension (VikMapSource * self)
+{
+       VikMapSourceClass *klass;
+       g_return_val_if_fail (self != NULL, NULL);
+       g_return_val_if_fail (VIK_IS_MAP_SOURCE (self), NULL);
+       klass = VIK_MAP_SOURCE_GET_CLASS(self);
+
+       g_return_val_if_fail (klass->get_file_extension != NULL, NULL);
+
+       return (*klass->get_file_extension)(self);
+}
+
 gboolean
 vik_map_source_coord_to_mapcoord (VikMapSource *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest )
 {